package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {
    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void auto() {}

    @Before("auto()")
    public void autoFill(JoinPoint joinPoint){
        log.info("执行自动填充");
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        OperationType value = signature.getMethod().getAnnotation(AutoFill.class).value();
        Object[] args = joinPoint.getArgs();
        if(args==null||args.length==0){return;}
        Object arg=args[0];
        Long currentId = BaseContext.getCurrentId();
        LocalDateTime now = LocalDateTime.now();
        if(value==OperationType.INSERT){
            try {
                Method setCreateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setCreateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                Method setUpdateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                setCreateTime.invoke(arg, now);
                setCreateUser.invoke(arg, currentId);
                setUpdateTime.invoke(arg, now);
                setUpdateUser.invoke(arg, currentId);
            } catch (Exception e) {
                e.printStackTrace();
            }

        }
        else if(value==OperationType.UPDATE){
            try {
                Method setUpdateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                setUpdateTime.invoke(arg, now);
                setUpdateUser.invoke(arg, currentId);
            } catch (Exception e) {
                e.printStackTrace();}
        }
    }
}
